Extend FunctionDefinition by a function type id

[bossenti]

While browsing through the API endpoint for SteamPipes functions I had the feeling that an additional attribute that identifies the type of a function could be valuable for the FunctionDefinition class. This would allow a client to map existing functions in StreamPipes to the underlying implementation and to directly create an instance of the function from the API response. How do you like that @dominikriemer?
Does this even make sense?

[dominikriemer]

Hi @bossenti can you provide an example how using the type identifier would work?
Currently, the function is only registered in the core to enable monitoring, while the implementation purely exists on the extensions service.

[bossenti]

So lets say I implement a FunctionA that has some-id as functionTypeId and create an instance of this that registers itself in the core. My idea is that this information enables you to do something like FunctionHandler.from(functionDefinition) that uses the information provided by functionDefinition to instantiate a FunctionA. Thereby, some-id is used to get the mapping to the FunctionA class. Do you understand what my intention is? 🤓